CN107928733B - Staple cartridge assembly and surgical instrument - Google Patents
Staple cartridge assembly and surgical instrument Download PDFInfo
- Publication number
- CN107928733B CN107928733B CN201711398180.3A CN201711398180A CN107928733B CN 107928733 B CN107928733 B CN 107928733B CN 201711398180 A CN201711398180 A CN 201711398180A CN 107928733 B CN107928733 B CN 107928733B
- Authority
- CN
- China
- Prior art keywords
- nail
- staple
- plate
- surgical instrument
- pushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims abstract description 13
- 238000010304 firing Methods 0.000 claims description 49
- 238000007599 discharging Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 2
- 210000003128 head Anatomy 0.000 description 13
- 230000000007 visual effect Effects 0.000 description 11
- 238000003825 pressing Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 238000011179 visual inspection Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 210000000214 mouth Anatomy 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000003872 anastomosis Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000012636 effector Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07271—Stapler heads characterised by its cartridge
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a nail bin assembly and a surgical operation instrument, the nail bin assembly comprises a bin body, a nail installed in the bin body, a nail pushing plate used for pushing out the nail from the bin body, and a cutting assembly capable of moving relative to the bin body, the bin body comprises a nail installation part, the nail installation part is provided with a tissue contact platform and a bottom surface arranged opposite to the tissue contact platform, a plurality of nail cavities are formed in the nail installation part, the nail cavities penetrate through the tissue contact platform and the bottom surface, the nail pushing plate comprises a plurality of nail pushing sheets which are arranged corresponding to the nail cavities and used for pushing out the nail from the nail cavities, and a fixing part used for fixing the nail pushing sheets, and the nail pushing plate also comprises a trigger applying part arranged on the fixing part.
Description
Technical Field
The present invention relates to a staple cartridge assembly and a surgical instrument.
Background
In general surgical treatment, a surgical instrument is a surgical tool in medical operation, and a linear anastomat is a surgical tool of a surgical instrument, which is commonly used for performing a tissue cutting and anastomosis function, and is a device used in medicine instead of manual suturing, and the main working principle is to separate or anastomose tissues by using titanium nails (staples), similar to a stapler. The cartridge assembly in the existing linear anastomat is a disposable part, after the use, since the titanium nails are fired, when the cutting suture is needed to be used again, the old cartridge assembly of the linear anastomat needs to be unloaded and a new cartridge assembly is reinstalled, but because the tension atmosphere of the operation and the naked eyes are difficult to recognize whether the cartridge assembly is fired, the fact that a doctor reinstalls the already fired cartridge assembly to an end effector can happen in the operation process, so that medical accidents are caused.
Disclosure of Invention
It is an object of the present invention to provide a cartridge assembly and a surgical instrument that can identify whether the cartridge assembly has been fired to avoid medical accidents.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a nail storehouse subassembly, includes the storehouse body, installs the internal staple of storehouse, and be used for with the staple follow the ejector pin board of the internal release of storehouse and can be relative the cutting assembly of storehouse body motion, the storehouse body includes the staple installation department, the staple installation department have the tissue contact platform with the bottom surface that the tissue contact platform set up in opposite directions, offered a plurality of staple chamber in the staple installation department, the staple chamber runs through tissue contact platform and bottom surface, the ejector pin board includes a plurality of correspondence the staple chamber sets up and is used for with the staple is followed ejector pin piece that the staple was released in the staple chamber and be used for fixing a plurality of ejector pin piece's fixed part, the ejector pin board is still including setting up trigger application spare on the fixed part.
Further, the nail pushing plate includes a block formed to protrude downward from a lower surface of the fixing portion, and the trigger applying member is embedded in the block.
Further, an embedding groove for embedding the trigger applying piece is formed in the bottom of the clamping block.
Further, the bin body further comprises two extending guard plates which are formed by extending backwards from the stitching nail installation part and are oppositely arranged, the nail pushing plate is arranged between the two extending guard plates, and a clamping structure used for limiting the fixing part to move relative to the bin body is arranged in front of the extending guard plates and the nail pushing plate.
Further, the clamping structure comprises a guard plate clamping groove formed in the extension guard plate and a positioning clamping block formed on the fixing part; when the staple pushing plate pushes out the staples from the staple cavities, the positioning clamping blocks are clamped in the guard plate clamping grooves.
Further, each extension guard plate comprises a first plate body part formed by extending backwards from the stitching nail installation part and a second plate body part formed by extending backwards from the first plate body part, the guard plate clamping groove is formed in the first plate body part, the second plate body part is provided with a guide groove extending along the stitching nail discharging direction, the center line of the guard plate clamping groove and the center line of the guide groove are overlapped, and the positioning clamping block can move from the guide groove to the guard plate clamping groove.
In order to achieve the above purpose, the present invention provides the following technical solutions: the surgical instrument comprises a gun body, wherein the gun body comprises a working head, an electric control part is arranged in the gun body, the surgical instrument further comprises the nail bin assembly, and the electric control part comprises an induction device which is arranged on the working head to form an identification switch with the trigger applying part.
Further, the working head comprises a shell, a closing rod, a firing rod, a nail anvil bracket and a nail anvil, wherein the closing rod and the firing rod extend out of the shell, the nail anvil bracket is connected with the shell, the nail anvil is arranged on the nail anvil bracket, a U-shaped forceps oral cavity is formed on the nail anvil bracket, the closing rod and the firing rod extend into the U-shaped forceps oral cavity, and the nail bin assembly is arranged on the closing rod and positioned in the U-shaped forceps oral cavity, and the sensing device is arranged on the nail anvil bracket.
Further, the nail anvil bracket comprises a front jaw arm, a rear jaw arm and a lower jaw arm which are arranged in a surrounding manner to form the U-shaped jaw cavity, a chute extending along the nail outlet direction of the nail is arranged in the lower jaw arm, the trigger applying part is positioned in the chute and can move along the nail outlet direction of the nail in the chute, and the sensing device is buried in the lower jaw arm.
Further, the sensing device is a Hall switch, and the trigger applying piece is a magnet for triggering the Hall switch; or the sensing device is a reflective photoelectric switch, and the trigger Shi Jiajian is a reflecting piece for triggering the reflective photoelectric switch.
The invention has the beneficial effects that: according to the nail bin assembly and the surgical instrument, the trigger applying piece is arranged on the nail pushing plate, and the sensing device which forms the identification switch with the trigger applying piece is arranged on the gun body matched with the trigger applying piece, so that the position of the trigger applying piece is sensed by the sensing device to identify whether the nail bin assembly is fired or not, and medical accidents are avoided.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a surgical instrument according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the cartridge assembly shown in FIG. 1;
FIG. 3 is an exploded view of the cartridge assembly shown in FIG. 2;
FIG. 4 is a schematic view of the surgical instrument of FIG. 1 in a closed configuration;
FIG. 5 is a cross-sectional view of the surgical instrument illustrated in FIG. 4;
FIG. 6 is an enlarged view of a portion of FIG. 5;
FIG. 7 is an enlarged view of a portion of the structure of the surgical instrument illustrated in FIG. 1 in a top view;
FIG. 8 is a cross-sectional view of a portion of the structure of FIG. 7 from another perspective (in an unfired state);
FIG. 9 is a cross-sectional view of a portion of the structure of FIG. 7 from another perspective (in a fired state);
FIG. 10 is an enlarged view of circle A of FIG. 8;
fig. 11 is an enlarged view of circle B in fig. 9.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1, a surgical instrument according to an embodiment of the present invention is an electrically driven stapler (hereinafter referred to as a stapler) for stapling and cutting tissue. The stapler includes a gun body 10 and a cartridge assembly 20 mounted on the gun body 10. Referring to fig. 2 and 3 in combination with fig. 6 and 7, the cartridge assembly 20 includes a cartridge body 11, staples (not shown) and upper tissue positioning needles 12 mounted within the cartridge body 11, a pusher plate 13 for pushing staples out of the cartridge body 11, a cutting assembly 14 movable relative to the cartridge body 11, and a staple guard plate 2 mounted on the cartridge body 11. In this embodiment, the cutting assembly 14 includes a tool holder 141 and a blade 142 fixed to the tool holder 141, and the tool holder 41 is provided with a mounting cavity 143 and a clamping slot 140 for fixing the blade 142, and the clamping slot 140 is opened toward the staple discharging direction. The mounting cavity 143 has a first wall 144, a second wall 145, a third wall 146, a fourth wall 147 and a top wall 148 forming the mounting cavity 143, the first wall 144 and the second wall 145 are located on both sides of the mounting cavity 143 in the staple discharging direction of the staples, the third wall 146 and the fourth wall 147 are located on both sides of the mounting cavity 143 in the thickness direction of the cartridge assembly, and the top wall 148 is located above the mounting cavity 143 in the mounting direction of the cartridge assembly 20. The second wall 145 is provided with a relief groove (not numbered). The cartridge body 11 includes a staple mounting portion 111, two extension shields 112 extending rearward from the staple mounting portion 111 (in a direction opposite to a staple discharging direction) and disposed opposite to each other, an upper positioning needle mounting portion 113 extending rearward from a top of the staple mounting portion 111, and a pressing block 117 extending downward from a lower side of the staple mounting portion 111. The shield plate 2 serves to shield the tissue contacting platform. The upper positioning needle mounting portion 113 is located above the two extending guard plates 112, and the two extending guard plates 112 are engaged and perpendicular to the positioning needle mounting portion 113. The staple mounting portion 111 has a tissue contact platform (not shown) contacting the tissue (not shown) to be stapled and cut, and a bottom surface (not shown) opposite to the tissue contact platform, a plurality of staple cavities (not shown) are formed in the staple mounting portion 111, a plurality of staples are mounted in the staple cavities through the tissue contact platform and the bottom surface, one staple is mounted in each staple cavity, each staple is held in the staple cavity by two bending rods, and the staple pushing plate 13 pushes the staples out of the staple cavities when the staples are ejected. The staple mounting portion 111 is provided with a first knife slot (not shown) extending in a longitudinal direction of the staple mounting portion 111 (the longitudinal direction is perpendicular to a staple discharging direction of the staples), the first knife slot penetrates through the tissue contact platform and the bottom surface, and when cutting the tissue, the blade 142 enters the first knife slot and extends out of the first knife slot to complete the cutting of the tissue. A receiving chamber (not numbered) is formed between the two extension shields 112, and a circular bump 114 is formed on the extension shield 112. The upper positioning needle mounting portion 113 is provided with a first channel 115 and a second channel 116 extending along the staple discharging direction of the staples, the first channel 115 is located above the second channel 116, and the upper tissue positioning needle 12 is disposed in the first channel 115 and can move in the first channel 115 along the staple discharging direction and the opposite direction of the staples. The ejector plate 13 includes a plurality of ejector pins 131 disposed corresponding to the staple cavities and configured to eject staples from the staple cavities, a fixing portion 132 configured to fix the plurality of ejector pins 131, and a trigger applying member 133 fixed to the fixing portion 132. The ejector blade 131 may be inserted into the staple cavity to remove the staples from the staple cavity to effect staples. The ejector plate 131 is formed to extend forward (in a direction opposite to the stapling direction) from the front end surface of the fixing portion 132. The upper end of the fixing portion 132 is inserted into the second channel 116, and the moving direction of the ejector plate 13 is restricted because the fixing portion 132 is inserted into the second channel 116. When the anastomat is triggered, the knife rest 41 abuts against the fixing part 132. The ejector plate 13 is provided with a second knife slot 134, the second knife slot 134 is arranged corresponding to the first knife slot, and the blade 142 passes through the second knife slot 134 before entering the first knife slot before cutting the tissue. The process of the stapling nail discharging is as follows: the blade 142 passes through the second slot 134 and then enters the first slot until the knife rest 41 abuts against the fixing portion 132, and then pushes the fixing portion 132 to move forward until the pushing piece 131 enters the staple cavity to push out the staples. In this embodiment, the nail pushing plate 13 further includes a locking block 135 formed to protrude downward from a lower surface of the fixing portion 132, the trigger applying member 133 is inserted into the locking block 135, and an insertion groove 136 (see fig. 6) for inserting the trigger applying member 133 is provided at a bottom of the locking block 135 for facilitating installation of the trigger applying member 133. In the staple discharging direction, the pressing block 117 is located at the front side of the clamping block 135.
To facilitate the observation of whether the gun body 10 is to be mounted or whether the cartridge assembly 20 mounted on the gun body 10 has been fired, in this embodiment, the cartridge body 11 is provided with a visual observation window 118 for displaying the position of the ejector plate 13; when the cartridge assembly 20 is not fired, a portion of the ejector plate 13 is exposed by the visual viewing window 118, and when the ejector plate 13 ejects the staples from the stapling cavity to complete firing, the ejector plate 13 is spaced away from the visual viewing window 118 so that the ejector plate 13 is not exposed within the visual viewing window 118. To facilitate explanation of the movement of the ejector plate 13, the position of the ejector plate 13 may be defined as a first position before firing of the cartridge assembly 20 and a second position after firing of the cartridge assembly 20, the ejector plate 13 being exposed within the visual inspection window 118 when the ejector plate 13 is in the first position, the visual inspection window 118 being offset from the ejector plate 13 when the ejector plate 13 is in the second position, the ejector plate 13 not being exposed within the visual inspection window 118. The visual inspection window 118 is located on one side of the second channel 116 and exposes a portion of the second channel 116. In this embodiment, in order to visually observe whether the ejector plate 13 is exposed in the visual observation window 118, the color of the ejector plate 13 has a color difference with the color of the second channel 116 and the color of the visual observation window 118. The ejector plate 13 and the cutting assembly 14 are arranged in the receiving cavity, and after stapling, the ejector plate 13 is kept in the second position by friction between the ejector plate 13 and the stapling cavity. In order to ensure that the ejector plate 13 is able to remain in the second position of the ejector plate 13, a snap-fit structure may be provided between the ejector plate 13 and the extension shield 112 to limit movement of the ejector plate 13. Specifically, in this embodiment, the extension guard plate 112 is provided with a guard plate clamping slot 1121, and the fixing portion 132 is provided with a positioning clamping block 137 that is matched with the guard plate clamping slot 1121; the staple pushing plate 13 pushes staples out of the staple cavities, and the guard clamping groove 1121 cooperates with the positioning clamping block 137 to limit the movement of the fixing portion 132 relative to the cartridge body 11. The guard plate clamping groove 1121 and the positioning clamping block 137 form a clamping structure, in other embodiments, the clamping structure may be other structures, or a clamping groove is provided on the fixing portion 132, and a clamping block matched with the clamping groove is provided on the extension guard plate 112. In this embodiment, each of the extension shields 112 includes a first plate body 1122 formed by extending rearward from the staple mounting portion 111 and a second plate body 1123 formed by extending rearward from the first plate body 1122, and the shield engaging groove 1121 is formed in the first plate body 1122. The second plate body 1123 is provided with a guide groove 1124 extending along the staple discharging direction of the staples, the center line of the guard plate clamping groove 1121 and the center line of the guide groove 1124 overlap, the guide groove 1124 and the guard plate clamping groove 1121 are communicated, and the positioning clamping block 137 can move from the inside of the guide groove 1124 to the inside of the guard plate clamping groove 1121. The guide groove 1124 is matched with the positioning clamping block 137 to ensure that the nail pushing plate 13 moves stably relative to the bin 11. In this embodiment, the guide groove 1124 and the guard plate locking groove 1121 are located on one of the extending guard plates 112, and in other embodiments, the guide groove 1124 and the guard plate locking groove 1121 may be provided on both extending guard plates 112. In this embodiment, the tool rest 41 is formed with a protruding guide block 149 that cooperates with the guide slot 1124, and the cooperation of the guide block 149 and the guide slot 1124 can make the tool rest 41 move smoothly.
In this embodiment, the cartridge body 11 is provided with a plurality of first anti-slip ribs 119 to facilitate grasping the cartridge assembly 20. Before the nail bin assembly 20 is fired, the nail protection plate 2 needs to be removed from the nail bin assembly 20, the nail protection plate 2 comprises a clamping part 21 used for clamping the bin body 11 and a pressing part 22 used for driving the clamping part 21 to clamp the bin body 11, and a plurality of second anti-slip protruding ribs 23 are arranged on the pressing part 22.
Referring to fig. 1 and fig. 4 to fig. 6, the gun body 10 includes a handle portion 3 and a working head 4, in this embodiment, the handle portion 3 is a reusable and sterilizable electric handle, a quick connector and a signal transmission port are disposed inside the handle portion 3, a replaceable battery pack for providing electric power is further disposed inside the handle portion 3, and the handle portion 3 is of a prior art structure, so that the details thereof will not be described herein. The handle 3 drives the closing, opening, firing, and other operations of the working head 4. The working head 4 comprises a shell 41, a transmission assembly 45, a closing rod 42, a firing rod 43, an anvil bracket 44, an anvil 46 and a connecting piece 47. The transmission assembly 45 is arranged in the shell 41 and is in butt joint with the handle part 3, the closing rod 42 and the firing rod 43 extend out of the shell 41, the closing rod 42 and the firing rod 43 are connected with the transmission assembly 45 and driven by the transmission assembly 45, the closing rod 42 and the firing rod 43 extend into the nail anvil bracket 44, the nail anvil bracket 44 is fixed on the shell 41 by the connecting piece 47, the connecting piece 47 is two opposite sheet-shaped bodies, and the firing rod 43 and the closing rod 42 are arranged between the two sheet-shaped bodies. The anvil 46 is disposed on the anvil bracket 44. The anvil bracket 44 includes a front jaw arm 441 and a rear jaw arm 442, which are disposed opposite to each other, and a lower jaw arm 443 connecting the front jaw arm 441 and the rear jaw arm 442, wherein a U-shaped jaw cavity 445 is formed around the front jaw arm 441, the rear jaw arm 442, and the lower jaw arm 443, the firing bar 43 and the closing bar 42 extend into the U-shaped jaw cavity 445 from the rear of the rear jaw arm 442, and the cartridge assembly 20 is disposed in the U-shaped jaw cavity 445.
Referring to fig. 3 and 7-11, the firing bar 43 is inserted into the mounting cavity 143, and in order to facilitate the docking of the firing bar 43 with the mounting cavity 143, an insertion port (not shown) is disposed on a side of the mounting cavity 143 opposite to the top wall 148, and the firing bar 43 is inserted into the mounting cavity 143 from the insertion port. The firing bar 43 has a mating end 431 that is inserted into the mounting cavity 143 and a longitudinal portion 432 that extends rearward from the mating end 431 and through the relief slot 149, the longitudinal portion 432 extending into the housing 41 for connection with the transmission assembly 45. The plug end 431 is provided with a bump 433. The second wall 145, the third wall 146 and the fourth wall 147 have a missing portion (not numbered), the second wall 145 restricts the protrusion 433 from being separated from the mounting cavity 143 in a direction opposite to the staple discharging direction, and the third wall 146 and the fourth wall 147 restrict the protrusion 433 from being separated from the mounting cavity 143 in a width direction of the cartridge module 20. The front end surface of the insertion end 431 is arc-shaped, and the front end surface pushes against the first wall 144, so that the cutting assembly 14 moves towards the staple discharging direction. The top wall 148 and the second wall 144 are surrounded with a hook slot 1431, the insertion end 431 is formed with a clamping block portion 434 inserted into the hook slot 1431, and the amplitude of the shake of the cutting assembly 14 on the firing bar 43 is limited by the cooperation of the hook slot 1431 and the clamping block portion 434 (see fig. 10 and 11). Since the firing bar 43 is inserted into the mounting cavity 143 of the cutting assembly 14 and the protrusion 43 is provided on the firing bar 43, a clamping connection is formed between the firing bar 43 and the cutting assembly 14, when the firing bar 43 drives the cutting assembly 14 to fire to cut tissue, the firing bar 43 is retracted to draw the cutting assembly 14 back to the unfired position. Referring to fig. 8 and 9, in order to describe the change in position of the push plate 131, a first state position 100 and a second state position 100' are defined in fig. 8 and 9, fig. 8 is that the cartridge assembly 20 is in an unfired state, fig. 9 is that the cartridge assembly 20 is in a fired state, during the firing process, the front end surface of the firing bar 43 pushes against the first wall 144 in the mounting cavity, so that the cutting assembly 14 moves along the staple ejection direction and pushes against the fixing portion 132 of the push plate 13 to move the push plate 13 simultaneously in the staple ejection direction, and when the staples are ejected, due to the difference in pressure applied by each staple, the opposite staples will generate a pushing force to the push plate 131, and after the pushing force is applied to the push plate 131, the pushing force is transferred to the cutting assembly 14, and as the front end surface of the pushing rod 43 is in an arc shape, the cutting assembly 14 can move along the arc direction thereof under the pushing force, and when the cutting assembly 14 moves relative to the firing bar 43, the cutting assembly 14 will drive the push plate 13 to move from the first state 100 to the second state, and the opposite staples will swing from the first state position 131 to the second state 100. Referring to fig. 10 and 11, when the cutting assembly 14 moves relative to the firing bar 43, the position of the latch portion 434 within the latch slot 1431 changes accordingly. In this embodiment, the front end surface of the firing bar 43 is configured to be arc-shaped, so that the angle of the nail pushing sheet 131 can be adjusted during firing, the consistency of the nail pushing sheet and the nail anvil is ensured, and the nail pushing sheet can adapt to different tissue thicknesses, and the angle is adjusted according to the different tissue thicknesses. Indeed, in other embodiments, the front face may also be tapered, but with a relatively arcuate shape, the taper is prone to rigid impact and the taper has a pointed portion that is prone to damage to the cutting assembly 14. In addition, the front end face of the surgical instrument is arranged into an arc shape or a conical shape, and the nail anvil bracket can be designed without pre-bending, so that the surgical instrument is simpler in design and manufacture.
The closure bar 42 is provided with a circular recess (not numbered) which mates with a circular boss 114 on the extension shield 112. The anvil 46 is fixed on the front jaw arm 441, the anvil 46 faces the cartridge assembly 20, the anvil 46 is opposite to the tissue contacting platform of the cartridge assembly 20, the anvil 46 has a staple contacting area (not numbered) which contacts with staples in the cartridge assembly 20 to apply pressure to the staples to bend the staples and form a B shape, the front jaw arm 441 is provided with an upper tissue positioning hole 444, when the stapler is closed, the upper tissue positioning needle 12 is inserted into the upper tissue positioning hole 444 to fix the stapled and cut tissue, in this embodiment, the closing lever 42 is provided with a deflector 421 which is abutted against the rear side of the upper tissue positioning needle 12, and when the closing lever 42 drives the cartridge assembly 20 to move in the direction of the anvil 46, the deflector 421 drives the upper tissue positioning needle 12 to move in the direction of the upper tissue positioning hole 444 until being inserted into the upper tissue positioning hole 44, thereby positioning the stapled and the cut tissue can be positioned later by the upper tissue positioning needle 12. The anvil bracket 44 has a lower tissue positioning needle 47 disposed thereon, the lower tissue positioning needle 47 being insertable into the bracket of the cartridge assembly 20. The lower tissue positioning needle 47 is fixed to the front jaw arm 441, and the upper tissue positioning needle 12, the lower tissue positioning needle 47 are located on both sides of the staple contact zone in the longitudinal direction of the anvil.
An electric control part is arranged in the gun body 10 and is connected with the quick connector, the signal transmission port and the replaceable battery pack, and the electric control part controls the closing, opening, firing and other actions of the working head 4. The manner in which the electronic control part controls the closing, opening and firing of the working head 4 is known in the art and will not be described in detail herein, in this embodiment, the electronic control part includes a sensing device 5, and the sensing device 5 and the trigger applying member 133 form a recognition switch. In a specific application, the sensing device 5 and the trigger applying member 133 may be products commonly used in the prior art, for example, the sensing device 5 is a reflective photoelectric switch, the trigger applying member 133 is a reflective member for triggering the reflective photoelectric switch, or the sensing device is a hall switch, and the trigger applying member is a magnet for triggering the hall switch. In this embodiment, the sensing device 5 is arranged on the lower jaw arm 443, and the sensing device 5 is embedded in the lower jaw arm 443 in order to make the structure of the stapler more compact. A sliding groove 446 extending along the staple discharging direction of the staples is formed in the lower jaw arm 443, when the staple cartridge assembly 20 is mounted on the working head 4, the clamping block 135 and the pressing block 117 are located in the sliding groove 446, the clamping block 135 and the pressing block 117 can move along the staple discharging direction and the staple discharging direction in the sliding groove 446, and a stop step 447 is arranged on one side of the sliding groove 446. The stop step 447 is located on the front side of the abutment block 117 in the staple ejection direction to limit the forward movement of the abutment block 117.
Referring to fig. 1 and fig. 4 to 6, the above-mentioned anastomat works in the following manner: when the cartridge module 20 needs to be mounted on the working head 4, the visual observation window 118 can be used for checking whether the nail pushing plate 13 can be seen, if not, the cartridge module 20 can be judged to be unfired (as a new cartridge module), otherwise, the cartridge module 20 can be unfired (as an old cartridge module), and the mounting and use can be avoided. After the nail bin assembly 20 is mounted on the working head 4, the sensing device 5 senses the trigger applying piece 133, if the sensing device 5 senses the trigger applying piece 133, the nail bin assembly 20 is further confirmed to be unfired, at the moment, the electric control part makes ready for closing and firing the nail anastomat, and if the sensing device 5 does not sense the trigger applying piece 133, the electric control part is closed. After the cartridge module 20 is mounted on the working head 4, the nail protection plate 2 of the cartridge module 20 needs to be removed first. After the staple protecting plate 2 is removed, the working head 4 of the surgical instrument is inserted into the tissue to be stapled and cut so that the stapled and cut tissue is positioned in the U-shaped jaw cavity 445, then the electronic control part starts a closing procedure, controls the battery power supply to drive the transmission assembly 45 to drive the closing rod 42 and the firing rod 43 to move towards the direction of the staple anvil 46 (the direction is the same as the staple discharging direction of the staples), because the staple cartridge assembly 20 is fixed on the closing rod 42 and the firing rod 43, at the moment, the closing rod 42 and the firing rod 43 push the staple cartridge assembly 20 together towards the direction of the staple anvil 46 until the tissue contact platform and the staple anvil 46 clamp the stapled and cut tissue, at the moment, the pressing block 117 and the stopping block 447 mutually abut against each other, the stopping block 447 limits the pressing block 117 to move forwards again, the staple cartridge assembly 20 cannot move towards the direction of the staple anvil 46 any more, so that the tissue contact platform and the nail anvil 46 can not excessively squeeze clamped and cut tissues, when the nail bin assembly 20 can not move towards the nail anvil 46 any more, the closing rod 42 stops moving, the electric control part starts the firing program, the firing rod 43 is controlled to still move towards the nail anvil 46, the firing rod 43 pushes the cutting assembly 14 in the nail bin assembly 20 to continuously move towards the nail anvil 46, the cutting assembly 14 pushes the nail pushing plate 13 to move towards the nail anvil 46 in the moving process, at the moment, the nail pushing plate 13 moves from the first position towards the second position, the trigger applying part 133 and the sensing device 5 are misplaced, the sensing device 5 can not sense the trigger applying part 133, at the same time, the nail pushing plate 13 gradually disappears from the visual observation window 118, the nail pushing plate 131 of the nail pushing plate 13 enters into the nail cavity to gradually push out the nail in the nail cavity from the nail cavity, the staples are moved in the direction of anvil 46 and the staples are driven into the tissue being stapled and severed to effect stapling, and upon completion of stapling, blade 142 severs the stapled tissue. When the stitching and cutting is completed, the ejector pin plate 13 is moved to the second position, and the positioning clamping blocks 137 on the ejector pin plate 13 enter the guard plate clamping grooves 1121 to realize clamping. When the suturing and cutting is completed, the electric control part starts a reset program, controls the firing bar 43 to retract first, drives the cutting assembly 14 fixedly connected with the firing bar 43 to retract when the firing bar 43 is retracted, and drives the whole nail bin assembly 20 to retract to the original position after the firing bar 43 and the closing bar 42 are simultaneously retracted backwards after the firing bar 43 is retracted to the same position as the closing bar 42. After the cartridge module 20 returns to its original position, the sensing device 5 will still not sense the trigger applying member 133 and the ejector plate 13 will not be exposed in the visual inspection window 118 because the positioning block 137 is in clamping engagement with the retainer plate slot 1121 and the ejector plate 13 remains in the second position. The cartridge assembly 20 and surgical instrument can be used to identify whether the cartridge assembly 20 is fired in two ways: 1. control program implements identification of cartridge assembly 20 (which may be referred to as electronic fool proofing): the nail bin assembly 20 and the surgical instrument are provided with the trigger applying piece 133 on the nail pushing plate 13, and the gun body 10 matched with the trigger applying piece 133 is provided with the sensing device 5 forming a recognition switch with the trigger applying piece 133, so that whether the nail bin assembly 20 is fired or not is recognized by sensing the position of the trigger applying piece 133 through the sensing device 5; 2. identification of cartridge assembly 20 is accomplished by visual inspection of the mechanical structure transformations: the cartridge module 20 and the surgical instrument determine whether the ejector plate 13 is fired by determining whether the ejector plate 13 is exposed by the visual observation window 118 by providing the cartridge body 11 with the visual observation window 118 for displaying the position of the ejector plate 13. Because the nail bin assembly 20 and the surgical instrument can identify the nail bin assembly 20 in a multiple mode through a control program and a visual observation mechanical mechanism, the accuracy of identifying the nail bin assembly 20 is improved, double insurance is realized, and medical accidents are avoided.
What should be stated here is also: when the closing rod 42 pushes the cartridge assembly 20 to move towards the anvil 46, the deflector rod 421 on the closing rod 42 simultaneously pushes the upper tissue positioning needle 12 to move towards the anvil 46 until the upper tissue positioning needle 12 is inserted into the upper tissue positioning hole 444, and the lower tissue positioning needle 47 is passively inserted into the cartridge body 11 during the process of moving the cartridge assembly 20 towards the anvil 46, so that the sutured and cut tissue in the U-shaped jaw cavity 445 is positioned at the upper and lower positions, and the sutured and cut tissue is positioned through the lower tissue positioning needle 47 and the upper tissue positioning hole 444, so that the subsequent suturing and cutting are facilitated.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. The surgical instrument comprises a gun body, wherein the gun body comprises a working head, and an electric control part is arranged in the gun body, and the surgical instrument is characterized by further comprising a nail bin assembly, and the electric control part comprises an induction device which is arranged on the working head and forms an identification switch with a trigger applying part;
The working head comprises a shell, a closing rod, a firing rod, a nail anvil bracket and a nail anvil, wherein the closing rod and the firing rod extend out of the shell, the nail anvil bracket is connected with the shell, the nail anvil is arranged on the nail anvil bracket, a U-shaped forceps cavity is formed on the nail anvil bracket, the closing rod and the firing rod extend into the U-shaped forceps cavity, and the nail bin assembly is arranged on the closing rod and is positioned in the U-shaped forceps cavity;
The nail bin assembly comprises a bin body, a nail installed in the bin body, a nail pushing plate used for pushing the nail out of the bin body, and a cutting assembly capable of moving relative to the bin body, wherein the bin body comprises a nail installation part, the nail installation part is provided with a tissue contact platform and a bottom surface which is arranged opposite to the tissue contact platform, a plurality of nail cavities are formed in the nail installation part, the nail cavities penetrate through the tissue contact platform and the bottom surface, the nail pushing plate comprises a plurality of nail pushing sheets which are arranged corresponding to the nail cavities and used for pushing the nail out of the nail cavities, and a fixing part used for fixing a plurality of nail pushing sheets, and the nail pushing plate further comprises a trigger applying part which is arranged on the fixing part;
The bin body further comprises two extension guard plates which are formed by extending backwards from the stitching nail installation part and are oppositely arranged, the nail pushing plate is arranged between the two extension guard plates, and a clamping structure used for limiting the fixing part to move relative to the bin body is arranged between the extension guard plates and the nail pushing plate;
The clamping structure comprises a guard plate clamping groove formed in the extension guard plate and a positioning clamping block formed on the fixing part; when the staple pushing plate pushes out the staples from the staple cavities, the positioning clamping blocks are clamped in the guard plate clamping grooves;
The cutting assembly comprises a cutter rest and a blade fixed on the cutter rest, and a mounting cavity and a clamping groove for fixing the blade are arranged in the cutter rest; the firing bar is provided with a splicing end inserted into the mounting cavity and a longitudinal part formed by extending backwards from the splicing end; the plug-in end is provided with a bump; in the firing process, the front end surface of the firing bar pushes against the first wall in the mounting cavity, so that the cutting assembly moves along the staple discharging direction of the staples and pushes against the fixing part of the staple pushing plate to enable the staple pushing plate to simultaneously move towards the staple discharging direction of the staples; the front end face of the inserting end is arc-shaped, so that the angle of the nail pushing sheet can be adjusted during firing.
2. The surgical instrument of claim 1, wherein the sensing device is disposed on the anvil bracket.
3. The surgical instrument of claim 2, wherein the anvil bracket includes a front jaw arm, a rear jaw arm, and a lower jaw arm enclosing the U-shaped jaw cavity, wherein the lower jaw arm defines a chute extending in a staple ejection direction of the staples, wherein the trigger applicator is positioned within the chute and movable within the chute in the staple ejection direction of the staples, and wherein the sensing device is embedded within the lower jaw arm.
4. The surgical instrument of claim 1, wherein the sensing device is a hall switch and the trigger applicator is a magnet to trigger the hall switch; or the sensing device is a reflective photoelectric switch, and the trigger Shi Jiajian is a reflecting piece for triggering the reflective photoelectric switch.
5. The surgical instrument of claim 1, wherein the staple pushing plate includes a latch protruding downward from a lower surface of the fixed portion, the trigger applicator being embedded within the latch.
6. The surgical instrument of claim 5, wherein a bottom of the cartridge is provided with an insertion slot for inserting the trigger applicator.
7. The surgical instrument of claim 1, wherein each of the extension shields includes a first plate portion extending rearward from the staple mounting portion and a second plate portion extending rearward from the first plate portion, the shield slots being formed in the first plate portion, the second plate portion being formed with guide slots extending in the staple ejection direction of the staples, the center lines of the shield slots overlapping the center lines of the guide slots, the positioning blocks being movable from the guide slots to the shield slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711398180.3A CN107928733B (en) | 2017-12-21 | 2017-12-21 | Staple cartridge assembly and surgical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711398180.3A CN107928733B (en) | 2017-12-21 | 2017-12-21 | Staple cartridge assembly and surgical instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107928733A CN107928733A (en) | 2018-04-20 |
| CN107928733B true CN107928733B (en) | 2024-04-30 |
Family
ID=61942126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711398180.3A Active CN107928733B (en) | 2017-12-21 | 2017-12-21 | Staple cartridge assembly and surgical instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107928733B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019209467A1 (en) * | 2018-04-23 | 2019-10-31 | Covidien Lp | Staple cartridge assembly for use in a surgical robotic system |
| CN111466975B (en) * | 2019-01-24 | 2022-04-15 | 苏州英途康医疗科技有限公司 | Surgical instrument and linear stapler |
| CN111466974B (en) * | 2019-01-24 | 2021-05-14 | 苏州英途康医疗科技有限公司 | Surgical instrument and linear stapler |
| JP2023509271A (en) | 2019-11-01 | 2023-03-08 | コヴィディエン リミテッド パートナーシップ | Surgical stapling device with knife blade lock |
| US20240138832A1 (en) * | 2021-02-25 | 2024-05-02 | Covidien Lp | Anvil assembly with reduced deflection |
| CN113057702B (en) * | 2021-03-26 | 2023-03-07 | 常州安康医疗器械有限公司 | Nail bin assembly of linear stitching instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204708912U (en) * | 2015-03-13 | 2015-10-21 | 苏州天臣国际医疗科技有限公司 | Medical stapler |
| CN206576905U (en) * | 2016-11-24 | 2017-10-24 | 苏州英途康医疗科技有限公司 | Linear incision stapler |
| CN209347113U (en) * | 2017-12-21 | 2019-09-06 | 苏州英途康医疗科技有限公司 | Nail bin groupware and surgical operating instrument |
-
2017
- 2017-12-21 CN CN201711398180.3A patent/CN107928733B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204708912U (en) * | 2015-03-13 | 2015-10-21 | 苏州天臣国际医疗科技有限公司 | Medical stapler |
| CN206576905U (en) * | 2016-11-24 | 2017-10-24 | 苏州英途康医疗科技有限公司 | Linear incision stapler |
| CN209347113U (en) * | 2017-12-21 | 2019-09-06 | 苏州英途康医疗科技有限公司 | Nail bin groupware and surgical operating instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107928733A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107928733B (en) | Staple cartridge assembly and surgical instrument | |
| US11389163B2 (en) | Surgical stapler with expandable jaw | |
| US10182814B2 (en) | Staple position sensor system | |
| EP2896373B1 (en) | Linear stitching and cutting apparatus | |
| US9706993B2 (en) | Staple cartridge with shipping wedge | |
| EP2368503B1 (en) | Pin alignment assembly for surgical stapler | |
| EP2937042B1 (en) | Linear surgical stapler with driver having a safety block | |
| CN108113723B (en) | Surgical instrument | |
| CN106923874B (en) | Operation anastomat | |
| CN108113722B (en) | Surgical instrument | |
| CN108125697B (en) | Surgical instrument | |
| CA3169731A1 (en) | Tissue guide for curved end effectors | |
| CN111466976A (en) | Nail bin for surgical operation instrument and surgical operation instrument | |
| CN213156138U (en) | Surgical stitching instrument with empty nail bin protection function | |
| CN210077759U (en) | Nail bin assembly for surgical instrument and surgical instrument | |
| CN108209999B (en) | End effector and surgical instrument | |
| WO2018161315A1 (en) | Method and device for loading a staple guide | |
| CN213156137U (en) | Nail bin protection device for intracavity anastomat, execution end and anastomat | |
| CN108209997B (en) | Surgical instrument | |
| CN108209998B (en) | Staple cartridge assembly and surgical instrument | |
| WO2022233019A1 (en) | Surgical stapling device with stopper for pusher/knife retention | |
| CN107951522B (en) | Surgical instrument | |
| CN111374727B (en) | Control mechanism for surgical instrument and surgical instrument | |
| CN118105118A (en) | Surgical instrument, guide assembly thereof and detaching tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |